private static void CheckHashes(SignerInfoCollection signers)
{
if ((signers == null) || (signers.Count < 1))
{
throw new CryptographicException(-2146885618);
}
SignerInfoEnumerator enumerator = signers.GetEnumerator();
while (enumerator.MoveNext())
{
SignerInfo current = enumerator.Current;
if (current.SignerIdentifier.Type == SubjectIdentifierType.NoSignature)
{
current.CheckHash();
}
}
}